40646-44-4Relevant academic research and scientific papers
Generation of 1-aryl-3-methoxycarbonylnitrilimines and their reaction with halogen-containing unsaturated compounds
Tomilov,Platonov,Okonnishnikova,Novikov,Volchkov
, p. 1138 - 1147 (2013/07/26)
Thermal decomposition of 1-(4-methoxyphenyl)- and 1-(4-fluorophenyl) hepta(methoxycarbonyl)-3a,7a-dihydroindazoles at 135 C in the presence of allyl or propargyl halides leads to the elimination of hexamethyl benzenehexacarboxylate and the formation of the corresponding pyrazolines or pyrazoles as the products of 1,3-dipolar cycloaddition of 1-aryl-3- methoxycarbonylnitrilimines to the multiple bonds of the substrates used. In the case of vinyl halides, the products of the target reactions are either obtained in low yields or nonexistent, with a side conversions taking place instead. Thus, for example, in the case of 1,1-dichloro-4-methylpenta-1,3-diene, besides hexamethyl benzenehexacarboxylate, 3,5,5-trichloro-2-methylpent-4-en-2-ol and arylchlorohydrazones MeO2CC(Cl)=N-NHAr were unexpectedly isolated as the main products, as well.
